Topics
4. Algebra and Matrices
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AustraliaQLD
Year 11

4.04 Representing information using matrices

Lesson
Worksheet
Practice

Interactive practice questions

Answer the following questions.

a

What is the definition of a matrix?

A rectangular array of only whole numbers.

A

A triangular array of real numbers or symbols.

B

A rectangular array of real numbers, symbols, and expressions.

C

A rectangular array of only real numbers.

D
b

What is a square matrix?

A matrix that contains the same number of rows as columns.

A

A matrix that contains more columns than rows.

B

A matrix that contains more rows than columns.

C
Easy
< 1min
Is the array
    $2$2 $3$3    
    $5$5 $-5$−5    
    $7$7 $-8$−8    
a matrix?
Easy
< 1min
Is the array
    $-1$−1 $-6$−6    
    $-5$−5 $8$8    
    $-2$−2 $\ $     
a matrix?
Easy
< 1min

How many elements does a matrix with $4$4 rows and $5$5 columns contain?

Easy
< 1min
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Outcomes

2.2.2.1

use matrices for storing and displaying information that can be presented in rows and columns, e.g. tables, databases, links in social or road networks

2.2.2.2

recognise different types of matrices (row matrix, column matrix (or vector matrix), square matrix, zero matrix, identity matrix) and determine the size of the matrix

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